Indicator system.



A. ZEISEL.

INDICATOR SYSTEM.

APPLICATION FILED JULY 1, 1913. RENEWED JUNE 24.1916.

Patented J an. 23, 1917.

ADQLPH ZEISEL, OF BEL AIR, MARYLAND.

INDICATOR SYSTEM.

Specification of Letters Patent.

Patented Jan. as, felt.

Application filed July 1, 1913, Serial No. 776,825. Renewed June 24,1916. Serial No. 105,708.

To all whom it may concern:

Be it known that I, ADoLrH ZEIsnL, a subject of the Austro HungarianEmpire, and resident of Bel Air, in the county of Harford and State ofMaryland, have invented certain' new and useful Improvements inIndicator Systems, of which the following is a specification.

My invention relates to an indicator system applicable as an enginetelegraph for steam boats; for hydro-electric plants; as water levelindicator in dams, reservoirs and tail'races; indicator for waterwheels; indicator of water levels in stand pipes and reservoirs; toindicate the quantity of gas in, gas tanks, and to automatically informone of the quantity of liquids in tanks at distilleries and breweries.In general any vertical or other movement may be indi-' cated at anydistance whatever, and theamount of the movement is noted.

The means for carrying out my invention is exhibited in the accompanyingdrawings in which like letters or numerals represent like parts.

Figure 1 is a plan of the essential device used in the operation of theinvention,

partly in section. Fig. 2 is a side elevas tion partly in centralsection. Fig. 3 is a as operated by any diagram of the circuits.

The general nature of the circuits is as follows: The two conductorsA'and B are of the same length and electrical resistance [and areconnected to a source Q of direct current in parallel.

In the practice of my invention, the-conduct or A, wound upon groovedspools Q and Q as shown in Fig. 1, is tapped at its central point X bythe wire C which leads to one post of the indicator W. The conductor Bis also wound upon spools Q, and Q}, said spools being non-combustible,non-absorbent and non-conductive and are mounted upon shafts 11, whichin turn are equipped with gear wheels-d and al There is also a drivingshaft provided with agear wheel a that meshes with the gear wheelsd'and'd and this shaft 4% has a pulley-n, representing the driving powerand actuated for example by the rise and fall. of a liquid. Or thispulley may be considered power whatever. When the shafts e and e arerotatedvby means of the shaft m and the gear wheel 6, the conductor B isunwound from one of said cylinders and wound upon the other cylinder,

pointer or vice versa. At the same time, the con- The path of thecurrent through the device seen in Figs. 1 and 2 is from the source ofdirect current to .a common binding post of conductors A and B, one-halfpassing through the conductor A to a second common binding post 00 andback to its source. The binding posts at, m are shown in Fig. 3. Theother half passes through the connecting means, shown. in Fig. 2 as aconductor H, to the contact sleeve extension K, to the contact sleeve j,to the shaft 2', through it, through the conductor B wound upon drums Q,and Q to the second contact screw the shaft 71 to the contact screw.

k to the shaft 1?, through the shaft 11 to a contact sleeve similar tothe sleeve 7' and through the extension K and suitable connecting meanstothe second common binding post.

The current which passes through the conductors'A and B is in equalportions or values, and if the trolley 1 makes contact at the exactcenter of the conductor B, as is the case seen in thediagram in Fig. 3,there is no current passing through the indicator W point. As soon aseither portion of the conductor B is lengthened or shortened, by

reference to the trolley f over which it travels, the said pointer willfor well known electrical reasons move to theright or left and to adistance dependent upon the amount of the current or pressure, assumingthat the indicator is .an ampere meter or volt-meter. The indicator willshow whether the pulley n turnsin one direction or the other as it isthis pulley that feeds the conductor B over the trolley f.

7) and 0" indicate insulator bearings for the shaft 2? of the slidingtrolley f. The proper elements should be properly msulated for directingthe current according to the circuits in the diagram in Fig. 3. Theinsulator 0 shows that, as an illustratlon, the shafts .z' of thecylinders Q and Q, are mounted in contact sleeves 3', provided withwhich therefore allows the of the indicator to rest at thezeroextensions 7:, and are for forming convenings and the frame.

l claim as my invention 1. In an indicator system, the combination of asource of direct current, a first and second conductor of equal lengthsand electrical resistances connected in parallel to said source ofdirect current, an indicator, an electrical connection between oneterminal of said indicator and the center of said first conductor, asliding trolley wheel bearing on said second conductor normally at itscenter, an electrical connection between said trolley wheel and theother terminal of said indicator, a pair of non-combustible,non-absorbent, non-conductive drums upon which said second conductor iswound, a pulley, a shaft therefor, and gearing between said shaft anddrums for communicating motions to-said drums for unwinding said secondconductor from one'dr'um and winding it upon the other drum, and causingthe said second conductor to pass in either direction and in contactwith said sliding trolley wheel.

2. In an indicator system, the combination of a source of directcurrent, a first and second conductor of equal lengths and electricalresistances connected in parallel with said source of direct current, anindicator, an electrical connection between one terminal of saidindicator and the center of said first conductor, a sliding trolleywheel bearing'on said second conductor normally at its center, anelectrical connection between said trolley wheel and the other terminalof said indicator, a pulley and means controlled by the rotation of saidpulleyin different directions, for feeding said second conductor backand forth along and in contact with said trolley wheel.

3. In an indicating system, the combination of an indicator, a pair ofspaced cylindrical drums each having its peripheral surface providedwith spaced annular ribs, a

slidably mounted trolley wheel arranged in the space between said drums,a source of current to one terminal of said indicator, a secondconductor connected to the remalning terminal of said source of current,said second conductor being coiled around both of the drums and lyingbetween the ribs formed'thereon, said trolley wheel being in electricalcontact with that portion of the second conductor that bridges thedistance between the drums, and a third conductor connecting theremaining terminal of the indicator with the trolley wheel.

4. In an indicator system, the combination of a source of directcurrent, a first and second conductor of equal length and electricalresistances connected in parallel with said source of direct current, anindicator, an electrical connection between one terminal of saidindicator and the center of said first conductor, a movable contactbearing on said second conductor normally at its cen ter, an electricalconnection between said contact and the other terminal of saidindicator, a pulley or lever, and means controlled by the rotation ofsaid pulley in different directions for feeding said second conductorback and forth along and in engagement with said contact.

Signed at Bel Air, in the county of Harford and State of Maryland, thistwentyfirst day of June, A. D. 1913.

ADOLPH ZEISEL.

Witnesses:

Enwa'nn QUARLES, FRANK H. FULroRD.

